Faint half positive line?

So, I took an Accuclear HPT, and within 5 minutes, I had a control line, a clear horizontal line, and then a strange, faint, half positive vertical line. I dont know if I would even call it a half line. It resembled the state of Idaho, in shape. I showed my DH, he saw it too, and he thinks it was just the dye bleeding, or an evap line. I told him those usually happen, way after the time limit. So, of course, I forgot about the test, and left in on the counter in